6. The following data represent the number of units of production per day turned
out by 5 different workmen using different types of machines
Workmen
Machine type
A B C D
1
2
3
4
5 44
46
34
43
38 38
40
36
38
42 47
52
44
46
49 36
43
32
33
39
i) Test whether the mean productivity is the same for the four different machine
types.
ii) Test whether 5 men differ with respect to mean productivity.
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